Gabriel Weston Kaplan is an American actor, comedian, and professional poker player. He played the eponymous teacher in the 1970s sitcom Welcome Back, Kotter. He later became a professional poker player and a commentator for the series High Stakes Poker on PokerGO.

Welcome Back, Kotter is an American sitcom starring Gabe Kaplan as a high-school teacher in charge of a racially and ethnically diverse remedial education class called the "Sweathogs." Recorded in front of a live studio audience, the series aired on ABC from September 9, 1975, through May 17, 1979. It provided John Travolta with his breakthrough role.